It's definitely possible to live without banks if there were widely accepted, agreed-upon methods of exchanging value.

Decentralized free markets (which does actually exist --->https://www.virieproject.com/) gives anyone from anywhere the ability to exchange anything for any currency.

However, this requires widespread education. Most are living in a state of ignorant bliss and don't actually realize how little freedom they have due to banking institutions.

It's now possible to live without a horse and carriage. Soon it will be possible to live without banks.